METHOD OF EXCAVATING TUNNEL, ETC., AND BORING MACHINE THEREOF

PURPOSE:To make it possible to form an improved longer column in an injection stirring type fore-piling method. CONSTITUTION:In a tunnel excavation method, boring is made by means of a drill unit equipped with a double pipe mounted on a boring machine. An outer casing 21 on the outside of the double...

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Bibliographische Detailangaben
Hauptverfasser:	MASUMOTO TERUO, ICHIMARU MICHIO, NAKAJIMA SHIRO, YOSHIDA MITSUHIRO, NAKANISHI WATARU, KAMEI AKIHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS GALLERIES HYDRAULIC ENGINEERING LARGE UNDERGROUND CHAMBERS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SHAFTS SOIL SHIFTING TUNNELS UNDERGROUND OR UNDERWATER STRUCTURES
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Beschreibung
Zusammenfassung:	PURPOSE:To make it possible to form an improved longer column in an injection stirring type fore-piling method. CONSTITUTION:In a tunnel excavation method, boring is made by means of a drill unit equipped with a double pipe mounted on a boring machine. An outer casing 21 on the outside of the double pipe is rotated in the first direction, and an inner rod 30 of the double pipe is rotated in the second direction opposite to the first direction to make boring.